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Old 05-24-2013, 08:24 AM   #8
knc1
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Posts: 17,212
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Join Date: Feb 2012
Location: Central Texas
Device: No K1, PW2, KV, KOA
Quote:
Originally Posted by ixtab View Post
I don't really understand the question. When the Kindle is in standby, it's pretty much powered off. I don't think the Wifi is on in that state, and it shouldn't be processing anything (though I seem to recall that cronjobs still get executed, so take the above with a grain of salt).
On my paperwhite - Which to all external signs is sound asleep ::

Plug in USB cable:
Code:
PM: resume of devices complete after 804.277 msecs
kernel: I PM:resume:duration=804.277:
Restarting tasks ... done.
g_ether gadget: high speed config #1: CDC Ethernet (ECM)
Battery: Resume - TimeSuspended(secs)=569234, NAC=0x1ed1, RSOC=98, capacity=92%
Battery: Resume - PostUpdate NAC=0x1c25, RSOC=98 
[root@kindle root]#
Which to me reads as if I forgot to shutdown USB network before putting it away the last time I used it.
(A change in the device's system resources will wake Linux from suspend - any Linux, even your desktop).

So the report says it sat in its case about 6.5 days, waiting for something to happen.
Used 8% of the battery capacity doing that.

According to the dmesg above - cron would not have been running - but I suspect the hardware timers where.
And obviously, the USB buses where powered (so the change in bus configuration could wake the sleeping kernel).

PS: Yes, earlier in the kernel message buffer it mentioned that the Wifi chip was powered off.

Last edited by knc1; 05-24-2013 at 08:32 AM.
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